PESHAWAR, Pakistan — Pakistani officials on Wednesday accused NATO helicopters of violating Pakistan’s air space over the Taliban and Haqqani stronghold of North Waziristan, along the Afghan border.

“Two helicopters intruded several kilometres inside Pakistan territory in Datta Khel town around 2:00 am (2100 GMT Tuesday),” a military official told AFP, speaking on condition of anonymity.

The helicopters flew in from the eastern Afghan province of Paktia and circled the border village of Zoi Nara for more than five minutes, the official in the provincial capital Peshawar said.

But a spokesman for NATO’s US-led International Security Assistance Force told AFP that their “operational reporting” showed that no ISAF helicopter crossed the border, which is unmarked in many places.